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scoundrel [369]
3 years ago
6

Which of these ordered pairs is a solution to the linear inequality y – 4x ≤ –6? A.(–2, 4) B.(1, –2) C. (1, 3) D. (2, 3)

Mathematics
2 answers:
Romashka [77]3 years ago
5 0
y - 4x \leq -6 \\ y  \leq  -6 + 4x \\
<span>After placing<span>:</span></span>
B. (-2)-4(1) \leq -6 \\ -6 \leq -6
Nimfa-mama [501]3 years ago
4 0
B.(1,-2) 
(-2)-4(1)=6
Therefore the ordered pair (1,-2) is the answer
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Answer:

b = (a/16) - 4

Step-by-step explanation:

a = 16(b + 4)

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b = (a/16) - 4

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3 years ago
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If a car reaches speeds of 0-100 mph in 0.8 seconds, how many mph will it reach in 1 second?
zvonat [6]

Answer:

125 mph

Step-by-step explanation:

This can be calculated as a simple rule of 3.

In rule of 3 problems, you need to first identify the measures and whether they are direct or inverse to each other.

If they are direct to each other, if one value increases the other will increase too. For example, lets suppose that the Buffalo Bills have won 3 of 4 games. When there are 8 games, then will have won 6, keeping this proportion. Here, the measures are the number of games and the number of Buffalo Bills wins.

Now if they are inverse to each other, if one value increases the other will decrease. For example, if you travel at 60 mph, you will need 6 hours to arrive at your destination. At 80 mph, you will need less time. So, a the average speed increases, the time you need will decrease.

In this case the speeds is proportional to the time. So, if the time increases, the speed will increase too. It can be calculated by the following rule of 3.

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4 0
3 years ago
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babunello [35]
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6 0
3 years ago
The cafeteria bought 200 French bread pizzas for lunch next week. If they had bought the pizza last week while it was on sale, i
Zina [86]

Answer:

$356

Step-by-step explanation:

To solve this problem, use this: (200 * 3.78) - (200 * 2)

(200 * 3.78) - (200 * 2)

<em>200 * 3.78 is the same as 2 * 378, which is 756.</em>

756 - (200 * 2)

<em>200 * 2 is the same as 4 * 100, which is 400.</em>

756 - 400

<em>Subtract 400 from 756 to get 356.</em>

356

If they brought the pizza last week, the school could have saved $356.

3 0
3 years ago
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